Occult Horror

Robert E. Howard: "The Black Stone" etc. (though best known for his sword-and-sorcery fantasy, Howard also wrote a number of modern-day horror stories including many set in Lovecraft's Cthulhu mythos.)

Plucky Kids In Peril

Franklin Dixon (pseudonym): "Hardy Boys" series

Carolyn Keene (pseudonym): "Nancy Drew" series

Hergé, "Tintin" series (comics)

Philip Pullman: "The Ruby In The Smoke", etc.

M.T. Anderson: "Whales On Stilts!", "The Clue Of The Linoleum Lederhosen", "Jasper Dash And The Flame Pits Of Delaware" (200x) [Utterly crazed parody mashups of every old juvenile adventure series, from Tom Swift to Nancy Drew. These take place nominally in the present day, but the milieu is at least 50% that of the old pulps.]

Lemony Snicket (pseudonym for Daniel Handler): "A Series Of Unfortunate Events" series

Seafaring Voyages

Jules Verne: "20,000 Leagues Beneath The Sea"

Staggering Stories of Super-Science

'Victor Appleton' (pseudonym): "Tom Swift" series

Jules Verne: "Journey To The Center Of The Earth", "From The Earth To The Moon", etc.

Alex Raymond: "Flash Gordon" (comic)

H.G. Wells: "The Time Machine", "The Island Of Dr. Moreau", etc.

"The Rocketeer" (comic, 198x; film, 1991)

"Sky Captain And The World Of Tomorrow" (2004)

War Stories

"Captain America" (comic, 194?-)

"The Red Baron" (2010)

All Of The Above!

M.T. Anderson: "Whales On Stilts!", "The Clue Of The Linoleum Lederhosen", "Jasper Dash And The Flame Pits Of Delaware" (200x) [Utterly crazed parody mashups of every old juvenile adventure series, from Tom Swift to Nancy Drew. These take place nominally in the present day, but the milieu is at least 50% that of the old pulps.]